| An anthozoan coral polyp, which resembles a sea anemone, can nearly completely retract into the calcareous cup it secrets around itself. |
| The chaetetids compose a small group of organisms that was most often presumed to be among the anthozoan corals, more specifically allied to the Tabulata. |
| It has been proposed that the most recent common ancestor between cnidarians and bilaterians would have been morphologically similar to a pennatulacean anthozoan. |
| When Wotton in 1552 gave to anthozoan corals and gorgonians, and hydrozoans the name Zoophyte, it was because of their morphological similarity to higher plants. |
| It is not homologous with the bilaterality of body plans characteristic of anthozoan groups. |
| The life cycles of the hydrozoans P. carnea and Hydractinia echinata and a representative anthozoan. |
